aboutsummaryrefslogtreecommitdiffstats
path: root/techlibs/intel/common
diff options
context:
space:
mode:
Diffstat (limited to 'techlibs/intel/common')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-08 12:11:23 +0000
8 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
typedef uint8_t            u8;
typedef uint16_t           u16;
typedef uint32_t           u32;
typedef uint64_t           u64;
typedef int8_t             s8;
typedef int16_t            s16;
typedef int32_t            s32;
typedef int64_t            s64;
#include <public/xen.h>
#include <asm-x86/x86_emulate.h>

static int read_any(
    unsigned long addr,
    unsigned long *val,
    unsigned int bytes,
    struct x86_emulate_ctxt *ctxt)
{
    switch ( bytes )
    {
    case 1: *val = *(u8 *)addr; break;
    case 2: *val = *(u16 *)addr; break;
    case 4: *val = *(u32 *)addr; break;
    case 8: *val = *(unsigned long *)addr; break;
    }
    return X86EMUL_CONTINUE;
}

static int write_any(
    unsigned long addr,
    unsigned long val,
    unsigned int bytes,
    struct x86_emulate_ctxt *ctxt)
{
    switch ( bytes )
    {
    case 1: *(u8 *)addr = (u8)val; break;
    case 2: *(u16 *)addr = (u16)val; break;
    case 4: *(u32 *)addr = (u32)val; break;
    case 8: *(unsigned long *)addr = val; break;
    }
    return X86EMUL_CONTINUE;
}

static int cmpxchg_any(
    unsigned long addr,
    unsigned long old,
    unsigned long new,
    unsigned int bytes,
    struct x86_emulate_ctxt *ctxt)
{
    switch ( bytes )
    {
    case 1: *(u8 *)addr = (u8)new; break;
    case 2: *(u16 *)addr = (u16)new; break;
    case 4: *(u32 *)addr = (u32)new; break;
    case 8: *(unsigned long *)addr = new; break;
    }
    return X86EMUL_CONTINUE;
}

static int cmpxchg8b_any(
    unsigned long addr,
    unsigned long old_lo,
    unsigned long old_hi,
    unsigned long new_lo,
    unsigned long new_hi,
    struct x86_emulate_ctxt *ctxt)
{
    ((unsigned long *)addr)[0] = new_lo;
    ((unsigned long *)addr)[1] = new_hi;
    return X86EMUL_CONTINUE;
}

static struct x86_emulate_ops emulops = {
    read_any, write_any, read_any, write_any, cmpxchg_any, cmpxchg8b_any
};

int main(int argc, char **argv)
{
    struct x86_emulate_ctxt ctxt;
    struct cpu_user_regs regs;
    char instr[20] = { 0x01, 0x08 }; /* add %ecx,(%eax) */
    unsigned int res = 0x7FFFFFFF;
    u32 cmpxchg8b_res[2] = { 0x12345678, 0x87654321 };
    int rc;

    ctxt.regs = &regs;
    ctxt.mode = X86EMUL_MODE_PROT32;

    printf("%-40s", "Testing addl %%ecx,(%%eax)...");
    instr[0] = 0x01; instr[1] = 0x08;
    regs.eflags = 0x200;
    regs.eip    = (unsigned long)&instr[0];
    regs.ecx    = 0x12345678;
    ctxt.cr2    = (unsigned long)&res;
    res         = 0x7FFFFFFF;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x92345677) || 
         (regs.eflags != 0xa94) ||
         (regs.eip != (unsigned long)&instr[2]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing xorl (%%eax),%%ecx...");
    instr[0] = 0x33; instr[1] = 0x08;
    regs.eflags = 0x200;
    regs.eip    = (unsigned long)&instr[0];
#ifdef __x86_64__
    regs.ecx    = 0xFFFFFFFF12345678UL;
#else
    regs.ecx    = 0x12345678UL;
#endif
    ctxt.cr2    = (unsigned long)&res;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x92345677) || 
         (regs.ecx != 0x8000000FUL) ||
         (regs.eip != (unsigned long)&instr[2]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing lock cmpxchgb %%cl,(%%eax)...");
    instr[0] = 0xf0; instr[1] = 0x0f; instr[2] = 0xb0; instr[3] = 0x08;
    regs.eflags = 0x200;
    regs.eip    = (unsigned long)&instr[0];
    regs.eax    = 0x92345677UL;
    regs.ecx    = 0xAA;
    ctxt.cr2    = (unsigned long)&res;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x923456AA) || 
         (regs.eflags != 0x244) ||
         (regs.eax != 0x92345677UL) ||
         (regs.eip != (unsigned long)&instr[4]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing lock cmpxchgb %%cl,(%%eax)...");
    instr[0] = 0xf0; instr[1] = 0x0f; instr[2] = 0xb0; instr[3] = 0x08;
    regs.eflags = 0x200;
    regs.eip    = (unsigned long)&instr[0];
    regs.eax    = 0xAABBCC77UL;
    regs.ecx    = 0xFF;
    ctxt.cr2    = (unsigned long)&res;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x923456AA) || 
         ((regs.eflags&0x240) != 0x200) ||
         (regs.eax != 0xAABBCCAA) ||
         (regs.ecx != 0xFF) ||
         (regs.eip != (unsigned long)&instr[4]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing xchgl %%ecx,(%%eax)...");
    instr[0] = 0x87; instr[1] = 0x08;
    regs.eflags = 0x200;
    regs.eip    = (unsigned long)&instr[0];
    regs.ecx    = 0x12345678;
    ctxt.cr2    = (unsigned long)&res;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x12345678) || 
         (regs.eflags != 0x200) ||
         (regs.ecx != 0x923456AA) ||
         (regs.eip != (unsigned long)&instr[2]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing lock cmpxchgl %%ecx,(%%eax)...");
    instr[0] = 0xf0; instr[1] = 0x0f; instr[2] = 0xb1; instr[3] = 0x08;
    regs.eflags = 0x200;
    res         = 0x923456AA;
    regs.eip    = (unsigned long)&instr[0];
    regs.eax    = 0x923456AAUL;
    regs.ecx    = 0xDDEEFF00L;
    ctxt.cr2    = (unsigned long)&res;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0xDDEEFF00) || 
         (regs.eflags != 0x244) ||
         (regs.eax != 0x923456AAUL) ||
         (regs.eip != (unsigned long)&instr[4]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing rep movsw...");
    instr[0] = 0xf3; instr[1] = 0x66; instr[2] = 0xa5;
    res         = 0x22334455;
    regs.eflags = 0x200;
    regs.ecx    = 23;
    regs.eip    = (unsigned long)&instr[0];
    regs.esi    = (unsigned long)&res + 0;
    regs.edi    = (unsigned long)&res + 2;
    regs.error_code = 0; /* read fault */
    ctxt.cr2    = regs.esi;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x44554455) ||
         (regs.eflags != 0x200) ||
         (regs.ecx != 22) || 
         (regs.esi != ((unsigned long)&res + 2)) ||
         (regs.edi != ((unsigned long)&res + 4)) ||
         (regs.eip != (unsigned long)&instr[0]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing btrl $0x1,(%edi)...");
    instr[0] = 0x0f; instr[1] = 0xba; instr[2] = 0x37; instr[3] = 0x01;
    res         = 0x2233445F;
    regs.eflags = 0x200;
    regs.eip    = (unsigned long)&instr[0];
    regs.edi    = (unsigned long)&res;
    ctxt.cr2    = regs.edi;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (res != 0x2233445D) ||
         ((regs.eflags&0x201) != 0x201) ||
         (regs.eip != (unsigned long)&instr[4]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing cmpxchg8b (%edi) [succeeding]...");
    instr[0] = 0x0f; instr[1] = 0xc7; instr[2] = 0x0f;
    regs.eflags = 0x200;
    regs.eax    = cmpxchg8b_res[0];
    regs.edx    = cmpxchg8b_res[1];
    regs.ebx    = 0x9999AAAA;
    regs.ecx    = 0xCCCCFFFF;
    regs.eip    = (unsigned long)&instr[0];
    regs.edi    = (unsigned long)cmpxchg8b_res;
    ctxt.cr2    = regs.edi;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (cmpxchg8b_res[0] != 0x9999AAAA) ||
         (cmpxchg8b_res[1] != 0xCCCCFFFF) ||
         ((regs.eflags&0x240) != 0x240) ||
         (regs.eip != (unsigned long)&instr[3]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing cmpxchg8b (%edi) [failing]...");
    instr[0] = 0x0f; instr[1] = 0xc7; instr[2] = 0x0f;
    regs.eip    = (unsigned long)&instr[0];
    regs.edi    = (unsigned long)cmpxchg8b_res;
    ctxt.cr2    = regs.edi;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) || 
         (cmpxchg8b_res[0] != 0x9999AAAA) ||
         (cmpxchg8b_res[1] != 0xCCCCFFFF) ||
         (regs.eax != 0x9999AAAA) ||
         (regs.edx != 0xCCCCFFFF) ||
         ((regs.eflags&0x240) != 0x200) ||
         (regs.eip != (unsigned long)&instr[3]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing movsxbd (%%eax),%%ecx...");
    instr[0] = 0x0f; instr[1] = 0xbe; instr[2] = 0x08;
    regs.eip    = (unsigned long)&instr[0];
    regs.ecx    = 0x12345678;
    ctxt.cr2    = (unsigned long)&res;
    res         = 0x82;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) ||
         (res != 0x82) ||
         (regs.ecx != 0xFFFFFF82) ||
         ((regs.eflags&0x240) != 0x200) ||
         (regs.eip != (unsigned long)&instr[3]) )
        goto fail;
    printf("okay\n");

    printf("%-40s", "Testing movzxwd (%%eax),%%ecx...");
    instr[0] = 0x0f; instr[1] = 0xb7; instr[2] = 0x08;
    regs.eip    = (unsigned long)&instr[0];
    regs.ecx    = 0x12345678;
    ctxt.cr2    = (unsigned long)&res;
    res         = 0x1234aa82;
    rc = x86_emulate_memop(&ctxt, &emulops);
    if ( (rc != 0) ||
         (res != 0x1234aa82) ||
         (regs.ecx != 0xaa82) ||
         ((regs.eflags&0x240) != 0x200) ||
         (regs.eip != (unsigned long)&instr[3]) )
        goto fail;
    printf("okay\n");

    return 0;

 fail:
    printf("failed!\n");
    return 1;
}